From 8b84801f7f5e66d4a81f10d75ff70a3526d2fefc Mon Sep 17 00:00:00 2001
From: Gael Guennebaud <g.gael@free.fr>
Date: Fri, 30 Sep 2016 22:49:59 +0200
Subject: bug #1310: workaround a compilation regression from 3.2 regarding
 triangular * homogeneous

---
 Eigen/src/Geometry/Homogeneous.h | 12 ++++++++++++
 1 file changed, 12 insertions(+)

(limited to 'Eigen/src/Geometry')

diff --git a/Eigen/src/Geometry/Homogeneous.h b/Eigen/src/Geometry/Homogeneous.h
index 4e2213b33..a23068c8d 100644
--- a/Eigen/src/Geometry/Homogeneous.h
+++ b/Eigen/src/Geometry/Homogeneous.h
@@ -402,6 +402,18 @@ struct generic_product_impl<Lhs, Homogeneous<RhsArg,Vertical>, DenseShape, Homog
   }
 };
 
+// TODO: the following specialization is to address a regression from 3.2 to 3.3
+// In the future, this path should be optimized.
+template<typename Lhs, typename RhsArg, int ProductTag>
+struct generic_product_impl<Lhs, Homogeneous<RhsArg,Vertical>, TriangularShape, HomogeneousShape, ProductTag>
+{
+  template<typename Dest>
+  static void evalTo(Dest& dst, const Lhs& lhs, const Homogeneous<RhsArg,Vertical>& rhs)
+  {
+    dst.noalias() = lhs * rhs.eval();
+  }
+};
+
 template<typename Lhs,typename Rhs>
 struct homogeneous_left_product_refactoring_helper
 {
-- 
cgit v1.2.3